Tape for stringers for separable fasteners



Nov. 5, 1929. w. c. FRENCH 1,734,135

- TAPE FOR STRINGERS FOR SEPARABLE FASTENERS I Filed Dec. 14, 1927 s Sheets-Sheet 1 TURKEY.

New, 5;, 11929. c, FRENCH 7 3,734,165

TAPE- FOR STRINGERS FOR SEPARABLE FASTENERS Filed Dec. 14, 1927 3 Sheets-Sheet 2 Nov. 5, 1929. w, c, FRENCH 3,734,165

TAPE FOR STRINGERS FOR SBPARABLE FASTENERS Filedveo. 14, 192 3 Sheets-Sheet- 5 v bvvzmop mlzmal nzway p I a".

Patented Nov. 5, 1929 at at WILLARD CHARLES FRENCH, OF MILTON, MASSACHUSETTS, ASSIGNOR T0 HOOKLESS FASTENER COMPANY, OF MEADVILLE, PENNSYLVANIA SYLVANIA TAPE FOR STRINGERS FOR SEPARABLE FASTENERS Application filed December 14, 1927. Serial No. 239,855.

My present invention relates to improvements in stringers for separable or slide fasteners andI will herein more specifically refer to those phases of my inventions which are more particularly involved in a woven stringer of this type.

111 my previous application for Letters Pat ent, Serial No. 161,626, filed January 17, 1927, I showed and described stringers of braided type. i In my present invention I will show types of woven stringers which I believe to be entirely new in this art. In the draw.- ings I have shown characteristic weaves embodying my invention and have endeavored diagrammatically to indicate the proper practices in obtaining such weaves. Throughout these drawings and in the accompanying specification like reference characters are employed to indicate corresponding parts, and in the drawings:

Fig. 1 is a view of a separable fastener system in which are embodied a pair of stringer sections in accordance with my invention.

Fig.2 is a diagrammaticweave indication of two picks of a cross section ofsuch a stringer, made with a single shuttle.

F 2 is a diagrammatic cross section of the following two picks in such stringer.

Figs. 2", 2 and 2 are diagrams showing the path of the shuttle threads in the manufacture of the same stringer.

Figs. 3, 3 3 and 3 are similardiagrams to those in Figs. 2, 2 2", 2 and 2 showing a construction for two shuttles working at once in the same direction.

Figs. 4:, 4. and 4 are similar diagrams.

of a construction for three shuttles working 'at the same time, one in opposite direction such a stringer the strength and evenness of the beads is of very great importance and my present invention contemplates a strip which may be woven with the desired beads .or ribs for fastener engagement which will have a maximum of strength and uniformity and yet be capable of. production at reasonable cost and without undue expense for necessary equipment.

In disclosing the principles involved in my present invention I will describe stringers of characteristic weave which fulfill these requirements. It may be said in general be-. fore proceeding to the detaileddescription of the forms shown, that structurally my present strip or stringer comprises a fiat web 1 which may be conveniently attached to the article on which the. fastener is to be used, and in weaving integral therewith, a pair of beads so woven as to be exposed or exposable as a freecdge on the stringer 1. In general I may also statethat I produce these beads 2 by a segregation of longitudinal or warp threads. These I displace with reference to each other and with reference to, the attaching web and secure them in such segregation and relation by attaching them to the web by weft threads common to the web in whole or in part.

In doing this I mayprocee'das shown in Figs. 2, 2 2, 2 and 2 In these I have indicated the warp threads as at IV with the segregated longitudinal threads or members indicated at W and W and the filling or weft at F. It will be seen from Fig.2 that the filling F traverses the warp in the tape proper regularly, passes through a series of warp threads W in enclosing relation to a cord or stuffer G, passes through the fabric at right angles, interlaces with another set or warp threads IN on the opposite side also disposed about a cord or stufi'er C and returns through the warp of the tape proper. In doing this the shuttle has followed a sequence which I have endeavored to illustrate in Fig. 2 the shuttle being indicatedat S. At (A) I have shown the first layingof the weft thread directly through the warp of the tape proper and out between the two cords C and C At (B) I have shown the shuttle'as-hav- A CORPORATION OF PENN- ing turned about one group of longitudinal members W to a free position from which it moves as at (C) through the second warp group W as at I) between the two groups to complete the cycle.

At this point in the weave, the two following picks perform the same operation except through the group of warp threads to a free position from which it moves as at G around the upper cord G through the warp group W returning as at H between the two groups to complete the cycle.

This weave, by the looping of the filler' upon itself, produces a line, indicated in cross section at T in Figs. 2 and 2, upon which there are 50% extra filling yarn thicknesses, tending to produce a tape whose beaded edge de-,

scribes a convex curve. This feature is desirable because in later operations the affixing of the metal fastener members tends to crimp the beaded edge and thus shorten that side of the tape. This is undesirable but is corrected by my invention. I

In Figs. 3, 3*, 3 and 3, I have shown a form to be woven with two shuttles in operation at once on a cross shotloom, thus weaving tape I Figs. 2, 3 4 indicate the positions of weft and heads at the same time and at as great a speed as the tape alone would be woven with a single shuttle. f

In Fig. 3 the filling from the upper of two shuttles S and S interlaces with war ends W around the -i1pper, bead Cgflvhile t e fill in}; from the lower shuttle S is weaving 0 1' the tape proper. On. the second pick shuttles return through the same warp tnreads respectively except that the upper shuttle S also passes under one or more ends of the main "warp as shown at (0) this binding the inside edge of the bead covering fabric to the tape fabric proper. This is shown diagrammatically in Fig. 3 wherein the first picks of the two shuttles working in unison pass around the upper warp group V and through the warp of the tape proper, as indicated at (J) in said fiigure. The second p1cks return in the same paths, as indicated at On the third and fourth picks, Fig. 3, the upper shuttle S passes through the Warp of the tape proper while the lower shuttle S weaves about the lower cord C through warp W passing over one or more ends of the warp W to bind the lower cord covering fabr c into the fabric of the tape proper. This Is also shown diagrammatically in Fig. 3 where n the third picks of the two shuttles pass v through the warp of the tape proper and around the lower bead C, as indicated at (L),

returning through the same paths, as'indi- (J) and (K) later looped the lower bead- C on picks (L) and (M). V

In Fig. 4 the modification indicated may be produced ona cross shot loomv in which three shuttles in operation at the'same'time weave upper'bead, tape fabric and lower head at the same speed as a single shuttle in a plain tape. The shuttle S filling F warp IV always weave together to form the upper;

bead. Shuttle S, filling F, warp W always weave together in'the tape pro er while shuttle S filling F and warp form the lower head around cord C 2 always of the tape coveringfabrics into the fabric I of the tape proper.

In this construction, therefore,-the tape itself may be of one color and sizes or variety of yarns, while the bead coverings may be of different colors and sizes or kinds of yarn.

in the fabrics shown in Figs. 2 and 2 3 and 3 and Fig. 4, respectively. Parallel curved or straight lines indicate that a shuttle returns on the same path through same warp.

I have indicated in F'gs. 2, 2*, 2 and 2, Figs. 3, 3, 3 and 3, Figs. 4, 4 and 4, structures and weaves in which the beads are formed in the fabric by being fabricated therein with weft. Figs. 3 and 3 illustrate specific developments whereby it is 'possible to produce a beaded tape at the same speed as a plain tape except for lessened loom speed due to somewhat increased complication of mechanism. These same constructions may be produced at still less speed by using several shuttlesin series instead of in unison and there are other ways of attaching cords to tape by shuttle thread inclusion which will occur to those skilled in the art of weaving but which are not shown.

In Figs. 5 and 5*,I have tried to illustrate amethod of forming longitudinal beads to a tape by means of warp inclusion. In this and similarpossible constructions the filling F traverses the Warp for the full-width of the tape and beads and were it not for the doupthreads D and D andthe stuffers C and C wou'ld-produce an ordinary flat tape. The ends D and D of a special warp function to produce What is known as Roman cords on This isshown diagrammatically in Fig. 4 wheremerges doup thread D is crossed under stutter 0 from a position over the previous weft thread to a position over the p1ck under discussion and returned to its starting position on the pick following. Thus by this or similar constructions pairs of cords may be bound into positions opposite each other on opposite sides of a tape as it is being woven.

The tape or web portion of the stringer may be 0 any desired weave or pattern, that shown in the drawings being merely employed for simplicity of illustration.

The cords or stufi'ers C and C may be single strands spun to the desired size in cotton, or

\ other material; they may be formed of smaller yarns twisted or braided together to form a cord of the desired size; or they may be a number of separate threads which will be bound into bead forms by the weaving process. These beads, if woven as in Fig. 4 or 5, may be of contrasting color to that of the tape proper. This assists in inspecting finished fasteners as the position of the metallie fastener members can be better checked where the beads are clearly visible and distinct from the tape proper. These constructions in Figs. 4 and 5 also make possible the use of yarns, difierent in size or material from those in the tape proper, in the weaving of the beads.

What I therefore claim and desire to secure by Letters Patent is:

1. An integral woven stringer for a fastener series comprising an attaching strip and interwoven tubular portions on opposite sides of weft threads simultaneously or consecutively woven in a single operation with warp threads to form saidweb and provide a pair of longitudinal tubular portions disposed at opposite sides of said web, and stufiers of a diameter relatively large with respect to said threads enclosed in tubular portions of the said stringer.

.5. An integral wovenstringer for a fastener series comprising an attaching strip having interwoventubular portions on opposite sides thereof along one edge, each tubular portion having one or more systems of warp additional to that used in the attaching portion, and a. stufier in each tubular portion.

An integral woven strin er for a fastener series comprising an attaching strip having tubular interwoven portions on opposite sides thereof 'and along one edge, and a stufi'er in each tubular portion.

In testimony whereof I a signature.

' LLARD CHARLES 1' ENCH.

of the strip along one edge thereof having one or more systems of filling additional to and separate from that used in the attaching portion.

.2. A woven stringer for separable fasteners comprising a web including a group of weft threads woven in a single 0 eration with warp threads to provide a pair 0 longitudinal tubular portions disposed at opposite sides of said web, and stutfers of a diameter relatively large with respect to said threads enclosed in the tubular portions of the stringer.

3. A woven stringer for separable fasteners comprising a web including two groups of weft threads coincidentally o1" alternatel woven in a'single operation with warp threa to provide a pair of longitudinal tubular pone tions dis osed at op osite sides of said web, and stu ers of a diameter relative! large with respect to said'threads enclos in the tubular portions of the stringer.

4. A woven stringer for separable fasteners comprising a web. including three groups 

